Talk:Schlage Primus

Primus predates Everest?
The line that claims "The Primus is an updated version of the Schlage Everest" seems unlikely, given that the Everest patented keyway was developed as a result of the classic CP thru FP Primus key profile patents expiring, I think it unlikely. Is it supposed to say "The Primus XP is an updated version of the Schlage Everest"?